public class main {
    public static void main(String args[]) {
        System.out.println("hello");
        System.out.println("hello world");
        System.out.println("hi");
        System.out.println("hello");
        System.out.println("hello world");
        System.out.println("hi");
        System.out.println("hello");
        System.out.println("hello world");
        System.out.println("hi");
        System.out.println("hello");
        //System.out.println("注释");
        System.out.println("hello world");
        System.out.println("hi");
        System.out.println("hello");
        System.out.println("hello world");
        System.out.println("hi");
    }
}
